Midterm Practice Nr507 Exam Questions With Correct Verified Answers | 100% Pass (A+ Certified)

MIDTERM PRACTICE NR507 EXAM QUESTIONS WITH CORRECT VERIFIED ANSWERS | 100% PASS (A+ CERTIFIED) 1. What is the primary antibody involved in Type I hypersensitivity reactions Correct Answer IgE antibodies 2. What cells are sensitized during Type I hypersensitivity Correct Answer Mast cells and basophils 3. What are the clinical manifestations of Type I hypersensitivity Correct Answer Vasodilation, bronchial smooth muscle contraction, and increased mucus production. 4. What characterizes Type II hypersensitivity reactions Correct Answer The immune system's assault on cells displaying modified self-antigens, mediated by autoantibodies. 5. What precautions are essential to prevent cytotoxic reactions in Type II hypersensitivity Correct Answer Blood typing and cross-matching during procedures like hemolytic transfusions. 6. What occurs in Type III hypersensitivity reactions Correct Answer Antibodies bind to soluble antigens, forming immune complexes that deposit in tissues and activate the complement system. 7. What are common complications associated with Type III hypersensitivity? Correct Answer Autoimmune diseases such as systemic lupus erythematosus, serum sickness, and Raynaud phenomenon. 8. What type of cells are primarily involved in Type III hypersensitivity Correct Answer Neutrophils. 9. What is the mechanism of Type IV hypersensitivity reactions Correct Answer Mediated by T lymphocytes and macrophages, leading to localized epidermal reactions. 10. How long after exposure do Type IV hypersensitivity reactions typically become apparent Correct Answer Days after exposure. 11. What can occur if T cells and macrophages cannot eliminate the antigen in Type IV hypersensitivity Correct Answer They may form a granuloma to isolate the antigen. 12. Which autoimmune diseases are associated with Type IV hypersensitivity? Correct Answer Rheumatoid arthritis and type 1 diabetes mellitus. 13.